Fanuc Series 15i/150i-MA (Programming) Operators Manual

9.SPINDLE SPEED FUNCTION (S FUNCTION) PROGRAMMING B-63324EN/03
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NOTE
Even when the conditions for issuing an alarm
related to spindle speed fluctuation detection have
not been satisfied in spindle speed detection
enabled mode (G26), a spindle speed fluctuation
detection overheat alarm is issued if:
- A spindle speed has been specified, and the actual
spindle speed remains at 0 min
-1
for at least one
second.
- Specified spindle speed
A spindle speed to be specified for spindle speed fluctuation detection
is determined as described below.
For the spindle motor and each spindle gear, the spindle speed
corresponding to the maximum output is set in parameter Nos. 5621 to
5628.
The spindle speed to be specified for an analog spindle is determined
from the maximum spindle speed parameters (parameter Nos. 5621 to
5628) selected using the spindle gear selection signals (GS1s to GS4s)
and the spindle motor command voltage signals (RI0s to RI12s).
The spindle speed to be specified for a serial spindle is determined
from the maximum spindle speed parameters (parameter Nos. 5621 to
5628) selected using the serial spindle clutch/gear signals (CTH1s and
CTH2s) and the spindle motor command voltage signals (RI0s to
RI12s).
The following tables list the relationships among the spindle gear
select signals (GS1s to GS4s), serial spindle clutch/gear signals
(CTH1s and CTH2s), and maximum spindle speed parameters (Nos.
5621 to 5628).
1) Serial spindle
CTH1s CTH2s Maximum spindle speed parameter
0 0 No.5621
0 1 No.5622
1 0 No.5623
1 1 No.5624
Spindle motor command voltage signals (RI0s to RI12s)
8191
0
Maximum spindle
speed (gear 1)
Spindle speed
Maximum spindle
speed (gear 2)
Maximum spindle
speed (gear 3)

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